Right now, I have an event listener that listens to a click on the screen. There is also a button on the screen. When I click on the button the event listener will execute before the onclick. Is there a way I can make onclick have higher priority?
<script>
document.body.addEventListener('click',function(){alert('1');}, false);
function clicked() {
alert('2');
}
</script>
<button onclick="clicked()">Click this</button>
Clicking the button also triggers the event handler. 1 shows before 2, when I click the button. I want 2 to show first.
addEventListner
's third argument is the useCapture
flag. If you set it to true
, handler will be executed while the event is traveling down to the button
element. However, if you set it to false
, the handler will be triggered while the event is bubbling up:
capture phase | | / \ bubbling up
-----------------| |--| |-----------------
| element1 | | | | |
| -------------| |--| |----------- |
| |element2 \ / | | | |
| -------------------------------- |
| W3C event model |
------------------------------------------
From: http://www.quirksmode.org/js/events_order.html#link4
In your example, the onclick
should be executed before the click handler on the body
tag. If you want to reverse the order of execution, you should capture
the event at body
.